If Hillary Clinton does not win PA by more than 20% it is a huge disaster for her and she should drop out.
I happen to agree, but 20 points does seem to be pretty arbitary.
UPDATE: Turns out I coined a word. So when you hear Tucker Carlson use the word Goalposting to mean setting expectations for the outcome of an election so that the results can be viewed as positive – you know you heard it here first.
(h/t Duncan Black for being a great guy.)